Ramp damage
I notice some ramp damage today on the subway ramp under the playfield where balls falls into the ramp once the single drop target has dropped. So I decided to take off the ramp to repair it. Although I had read many horror stories regarding the removal of this ramp, it turned out to be not so bad.
Main subway ramp
Of course the ramp was filthy, so I cleaned it with Bref prior to repairing the cracked ramp with Ambroid Pro Weld (an excellent soltuion for repairing ramps, as it welds the cracked plastic together at a molecular level rather than sticking them together).